Alert archive / New York / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 71, NWS Buffalo, NY

August 10, 2012Chautauqua County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at Aug 10, 2012, 3:31 PM EDT for Chautauqua County, New York. It was in force for 44 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Aug 10, 2012, 3:31 PM EDT (19:31 UTC)
Expired
Aug 10, 2012, 4:15 PM EDT
In force
44 min
Issued by
NWS Buffalo, NY
Area
Storm-based polygon

County Chautauqua County, NY

The radar

The Buffalo radar (KBUF), 103 km from the middle of the area, began a volume at 19:32 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 7.5 hours before the alert went out and 103 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Buffalo Intl Airport, NY at 12:00Z on 2012-08-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 99 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Buffalo Intl Airport, NY at 12:00Z on 2012-08-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 72 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
99 J/kg
Mixed-layer CIN
-66 J/kg
Mixed-layer LCL
871 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
72 m²/s²
0-3 km storm-relative helicity
59 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

255 
WUUS51 KBUF 101931
SVRBUF
NYC013-102015-
/O.NEW.KBUF.SV.W.0071.120810T1931Z-120810T2015Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
331 PM EDT FRI AUG 10 2012

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CHAUTAUQUA COUNTY IN WESTERN NEW YORK

* UNTIL 415 PM EDT

* AT 327 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS
  OF 60 MPH.  THIS STORM WAS LOCATED 9 MILES SOUTHWEST OF CHAUTAUQUA
  INSTITUTE...OR 18 MILES WEST OF JAMESTOWN...AND MOVING NORTHEAST AT
  25 MPH.

* SOME LOCATIONS IN THE WARNING INCLUDE...
  CHAUTAUQUA INSTITUTE...
  MAYVILLE...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS STORM. IF YOU ARE IN THE PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD
TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.

&&

LAT...LON 4216 7970 4246 7933 4221 7906 4199 7956
TIME...MOT...LOC 1931Z 227DEG 23KT 4214 7957

$$

APFFEL
3 follow-up statements
729 
WWUS51 KBUF 101950
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
350 PM EDT FRI AUG 10 2012

NYC013-102015-
/O.CON.KBUF.SV.W.0071.000000T0000Z-120810T2015Z/
CHAUTAUQUA NY-
350 PM EDT FRI AUG 10 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 415 PM EDT
FOR CENTRAL CHAUTAUQUA COUNTY...

AT 345 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN
EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR CHAUTAUQUA
INSTITUTE...OR 14 MILES NORTHWEST OF JAMESTOWN...MOVING NORTHEAST AT
25 MPH.

SOME LOCATIONS IN THE WARNING INCLUDE...
  STOCKTON...
  SINCLAIRVILLE...
  CASSADAGA...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS STORM. IF YOU ARE IN THE PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD
TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.

&&

LAT...LON 4207 7945 4221 7957 4246 7933 4221 7906
TIME...MOT...LOC 1950Z 227DEG 23KT 4222 7945

$$

APFFEL
958 
WWUS51 KBUF 102003
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
403 PM EDT FRI AUG 10 2012

NYC013-102015-
/O.CON.KBUF.SV.W.0071.000000T0000Z-120810T2015Z/
CHAUTAUQUA NY-
403 PM EDT FRI AUG 10 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 415 PM EDT
FOR CENTRAL CHAUTAUQUA COUNTY...

AT 359 PM EDT...A SEVERE THUNDERSTORM WAS REPORTED CAPABLE OF
PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED
NEAR BEMUS POINT...OR 12 MILES NORTHWEST OF JAMESTOWN...MOVING
NORTHEAST AT 25 MPH.

SOME LOCATIONS IN THE WARNING INCLUDE...
  STOCKTON...
  SINCLAIRVILLE...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS STORM. IF YOU ARE IN THE PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD
TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.

&&

LAT...LON 4211 7936 4226 7949 4246 7933 4221 7906
TIME...MOT...LOC 2002Z 227DEG 23KT 4223 7938

$$

APFFEL
662 
WWUS51 KBUF 102014
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
414 PM EDT FRI AUG 10 2012

NYC013-102024-
/O.EXP.KBUF.SV.W.0071.000000T0000Z-120810T2015Z/
CHAUTAUQUA NY-
414 PM EDT FRI AUG 10 2012

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL CHAUTAUQUA COUNTY WILL
EXPIRE AT 415 PM EDT...

AT 414 PM EDT NATIONAL WEATHER SERVICE RADAR SHOWED THAT THE SEVERE
THUNDERSTORM THAT PROMPTED THE WARNING HAD WEAKENED AND WAS NO LONGER
SEVERE...THUS THE WARNING HAS BEEN ALLOWED TO EXPIRE. IT STILL MAY 
PRODUCE HEAVY RAIN AND GUSTY WINDS.

LAT...LON 4211 7936 4226 7949 4246 7933 4221 7906
TIME...MOT...LOC 2014Z 227DEG 23KT 4228 7930

$$

APFFEL

The office that day

Everything else NWS Buffalo, NY issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 9, 8:59 PM EDTSpecial Weather StatementBUFLivingston61 min
Aug 9, 9:08 PM EDTSmall Craft AdvisoryBUF10 hr
Aug 9, 10:14 PM EDTSpecial Marine WarningBUF61 min
Aug 9, 10:37 PM EDTSpecial Marine WarningBUF53 min
Aug 9, 10:55 PM EDTSpecial Weather StatementBUFOswego50 min
Aug 9, 11:16 PM EDTSevere Thunderstorm WarningBUFOswego74 min
Aug 9, 11:19 PM EDTSpecial Marine WarningBUF56 min
Aug 10, 12:20 AM EDTSpecial Marine WarningBUF55 min
Aug 10, 12:21 AM EDTSpecial Weather StatementBUFLewis54 min
Aug 10, 2:29 PM EDTSpecial Weather StatementBUFChautauqua61 min
Aug 10, 3:54 PM EDTSpecial Weather StatementBUFGenesee66 min
Aug 10, 3:55 PM EDTSmall Craft AdvisoryBUF42 hr
Aug 10, 4:40 PM EDTSpecial Weather StatementBUFCattaraugus50 min
Aug 10, 5:05 PM EDTSpecial Weather StatementBUFLivingston40 min
Aug 10, 5:40 PM EDTSpecial Weather StatementBUFCattaraugus65 min
Aug 10, 5:47 PM EDTSpecial Weather StatementBUFOntario58 min
Aug 10, 6:28 PM EDTAreal Flood AdvisoryBUFMonroe, Wayne69 min

Nearby

Severe Thunderstorm Warnings in New York, 2012Every severe thunderstorm warning in 2012

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.